Intake hose for Audi S5 3.0 TFSI This silicone hose is a direct replacement for the original corrugated plastic intake pipe. It is a high-quality silicone hose, with several reinforced layers that provide a smoother inner profile and better airflow, and removes the original resonator. Forge Motorsport silicone hoses have been designed by incorporating an expansive silicone component known as Fluorosilicone. This means that these hoses can be used with modern long-life coolants, organic acid coolants (OAT), or non-oil-free air. The manufacture of these hoses has been designed to surpass the production hoses. They will improve any engine both technically and aesthetically The use of Fluorosilicone ensures that Forge hoses are the market leaders. Lifetime warranty*